Is there any reason for answers like "Too elementary/trivial", "Not research level" and so forth?
I understand what the level of this site is, but at times it would take 3 minutes to give a proper answer to an elementary question instead of the 30 seconds needed to spit a judgement.
I suffer this even outside this site and in real life: those who know don't answer (in many ways) and those who answer usually don't help much. Something similar happens with books and papers: there is a gap between textbooks and research level mathematics (or just some more elaborate examples, for what I can tell).
How are the ''beginners'' supposed to learn? Working on our own is good but it takes a lot of time and sometimes we may still need something to refine our work.